Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '662576ca49577614a04b258e9910a944e8ca95b7c32306418dedf8be8b95e036' 
  AND token = 'fCKC0D4D2sTZZmXGDdv46Aw3dZ9ohQxAnap6ngCC6UM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}